AuxXxilium/linux_dsm_epyc7002
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e5fdabacbf
linux_dsm_epyc7002/tools/testing/selftests
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Davide Caratti e5fdabacbf net/sched: act_tunnel_key: validate the control action inside init() 
the following script:

 # tc qdisc add dev crash0 clsact
 # tc filter add dev crash0 egress matchall \
 > action tunnel_key set src_ip 10.10.10.1 dst_ip 20.20.2 dst_port 3128 \
 > nocsum id 1 pass index 90
 # tc actions replace action tunnel_key \
 > set src_ip 10.10.10.1 dst_ip 20.20.2 dst_port 3128 nocsum id 1 \
 > goto chain 42 index 90 cookie c1a0c1a0
 # tc actions show action tunnel_key

had the following output:

 Error: Failed to init TC action chain.
 We have an error talking to the kernel
 total acts 1

         action order 0: tunnel_key  set
         src_ip 10.10.10.1
         dst_ip 20.20.2.0
         key_id 1
         dst_port 3128
         nocsum goto chain 42
          index 90 ref 2 bind 1
         cookie c1a0c1a0

then, the first packet transmitted by crash0 made the kernel crash:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
 #PF error: [normal kernel read fault]
 PGD 800000002aba4067 P4D 800000002aba4067 PUD 795f9067 PMD 0
 Oops: 0000 [#1] SMP PTI
 CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.0.0-rc4.gotochain_crash+ #536
 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
 RIP: 0010:tcf_action_exec+0xb8/0x100
 Code: 00 00 00 20 74 1d 83 f8 03 75 09 49 83 c4 08 4d 39 ec 75 bc 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 49 8b 97 a8 00 00 00 <48> 8b 12 48 89 55 00 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3
 RSP: 0018:ffff9346bdb83be0 EFLAGS: 00010246
 RAX: 000000002000002a RBX: ffff9346bb795c00 RCX: 0000000000000002
 RDX: 0000000000000000 RSI: ffff93466c881700 RDI: 0000000000000246
 RBP: ffff9346bdb83c80 R08: ffff9346b3e1e0c8 R09: 0000000000000000
 R10: 0000000000000000 R11: 0000000000000000 R12: ffff9346b978f000
 R13: ffff9346b978f008 R14: 0000000000000001 R15: ffff93466dceeb40
 FS:  0000000000000000(0000) GS:ffff9346bdb80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000000 CR3: 000000007a6c2002 CR4: 00000000001606e0
 Call Trace:
  <IRQ>
  tcf_classify+0x58/0x120
  __dev_queue_xmit+0x40a/0x890
  ? ip6_finish_output2+0x369/0x590
  ip6_finish_output2+0x369/0x590
  ? ip6_output+0x68/0x110
  ip6_output+0x68/0x110
  ? nf_hook.constprop.35+0x79/0xc0
  mld_sendpack+0x16f/0x220
  mld_ifc_timer_expire+0x195/0x2c0
  ? igmp6_timer_handler+0x70/0x70
  call_timer_fn+0x2b/0x130
  run_timer_softirq+0x3e8/0x440
  ? tick_sched_timer+0x37/0x70
  __do_softirq+0xe3/0x2f5
  irq_exit+0xf0/0x100
  smp_apic_timer_interrupt+0x6c/0x130
  apic_timer_interrupt+0xf/0x20
  </IRQ>
 RIP: 0010:native_safe_halt+0x2/0x10
 Code: 55 ff ff ff 7f f3 c3 65 48 8b 04 25 00 5c 01 00 f0 80 48 02 20 48 8b 00 a8 08 74 8b eb c1 90 90 90 90 90 90 90 90 90 90 fb f4 <c3> 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f4 c3 90 90 90 90 90 90
 RSP: 0018:ffffa48a8038feb8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
 RAX: ffffffffaa8184f0 RBX: 0000000000000003 RCX: 0000000000000000
 RDX: 0000000000000001 RSI: 0000000000000087 RDI: 0000000000000003
 RBP: 0000000000000003 R08: 0011251c6fcfac49 R09: ffff9346b995be00
 R10: ffffa48a805e7ce8 R11: 00000000024c38dd R12: 0000000000000000
 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
  ? __sched_text_end+0x1/0x1
  default_idle+0x1c/0x140
  do_idle+0x1c4/0x280
  cpu_startup_entry+0x19/0x20
  start_secondary+0x1a7/0x200
  secondary_startup_64+0xa4/0xb0
 Modules linked in: act_tunnel_key veth ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 crct10dif_pclmul crc32_pclmul snd_hda_codec_generic ghash_clmulni_intel mbcache snd_hda_intel jbd2 snd_hda_codec snd_hwdep snd_hda_core snd_seq snd_seq_device snd_pcm aesni_intel crypto_simd cryptd glue_helper joydev snd_timer snd pcspkr virtio_balloon soundcore i2c_piix4 nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect virtio_net sysimgblt fb_sys_fops ttm net_failover virtio_console virtio_blk failover drm serio_raw crc32c_intel ata_piix virtio_pci floppy virtio_ring libata virtio dm_mirror dm_region_hash dm_log dm_mod
 CR2: 0000000000000000

Validating the control action within tcf_tunnel_key_init() proved to fix
the above issue. A TDC selftest is added to verify the correct behavior.

Fixes: db50514f9a ("net: sched: add termination action to allow goto chain")
Fixes: 97763dc0f4 ("net_sched: reject unknown tcfa_action values")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-21 13:26:42 -07:00
..
android selftests: Fix test errors related to lib.mk khdr target 2018-12-17 09:17:55 -07:00
bpf selftests/bpf: add fwd enum resolution test for btf_dedup 2019-03-14 13:53:18 -07:00
breakpoints selftests: breakpoints: return Kselftest Skip code for skipped tests 2018-05-30 15:21:52 -06:00
capabilities
cgroup Add tests for memory.oom.group 2018-09-07 16:36:01 -06:00
cpu-hotplug selftests: cpu-hotplug: fix case where CPUs offline > CPUs present 2019-01-25 14:57:45 -07:00
cpufreq selftests: cpufreq: return Kselftest Skip code for skipped tests 2018-05-30 15:21:52 -06:00
drivers selftests: mlxsw: spectrum-2: Add massive delta rehash test 2019-02-24 20:25:29 -08:00
efivarfs selftests/efivarfs: add required kernel configs 2018-09-05 10:58:07 -06:00
exec selftests: exec: return Kselftest Skip code for skipped tests 2018-05-30 15:21:52 -06:00
filesystems selftests: add binderfs selftests 2019-01-30 15:19:56 +01:00
firmware selftests: firmware: fix verify_reqs() return value 2019-02-08 13:00:43 +01:00
ftrace The biggest change for this release is in the histogram code. 2019-03-11 17:01:32 -07:00
futex selftests: Fix test errors related to lib.mk khdr target 2018-12-17 09:17:55 -07:00
gpio selftests: gpio-mockup-chardev: Check asprintf() for error 2019-01-16 15:02:57 -07:00
ia64
ima selftests/ima: kexec_load syscall test 2018-12-11 07:19:47 -05:00
intel_pstate selftests: intel_pstate: notification about privilege required to run intel_pstate testing script 2018-05-30 21:31:31 -06:00
ipc selftests: ipc: return Kselftest Skip code for skipped tests 2018-05-30 15:21:53 -06:00
ir media updates for v5.1-rc1 2019-03-09 14:45:54 -08:00
kcmp
kmod selftests: kmod: return Kselftest Skip code for skipped tests 2018-05-30 15:21:53 -06:00
kvm KVM: selftests: check returned evmcs version range 2019-01-25 19:11:38 +01:00
lib selftests: lib: fix prime_numbers module search and skip logic 2018-05-30 21:32:55 -06:00
livepatch livepatch/selftests: use "$@" to preserve argument list 2019-02-12 10:58:47 +01:00
locking selftests: locking: return Kselftest Skip code for skipped tests 2018-05-30 15:29:06 -06:00
media_tests selftests: media_tests: return Kselftest Skip code for skipped tests 2018-05-30 15:29:06 -06:00
membarrier selftests: membarrier: return Kselftest Skip code for skipped tests 2018-05-30 15:29:06 -06:00
memfd selftests/memfd: add tests for F_SEAL_FUTURE_WRITE seal 2019-03-05 21:07:19 -08:00
memory-hotplug selftests: memory-hotplug: add required configs 2018-09-05 10:58:31 -06:00
mount selftests: mount: remove no longer needed config option 2018-08-09 11:26:07 -06:00
mqueue selftests: mqueue: return Kselftest Skip code for skipped tests 2018-05-30 15:29:06 -06:00
net selftest/net: Remove duplicate header 2019-03-04 11:35:51 -08:00
netfilter selftests: netfilter: add simple masq/redirect test cases 2019-02-04 14:21:27 +01:00
networking/timestamping Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-15 12:38:38 -08:00
nsfs
ntb
powerpc selftests/powerpc: Remove duplicate header 2019-02-26 12:32:06 +11:00
prctl
proc tools/testing/selftests/proc/proc-pid-vm.c: test with vsyscall in mind 2019-03-14 14:36:20 -07:00
pstore selftests: pstore: return Kselftest Skip code for skipped tests 2018-06-18 09:11:09 -06:00
ptp
ptrace
rcutorture tools headers: Move the nolibc header from rcutorture to tools/include/nolibc/ 2019-01-25 15:37:13 -08:00
rseq rseq/selftests: fix parametrized test with -fpie 2018-09-27 12:59:19 -06:00
rtc selftests: rtc: rtctest: add alarm test on minute boundary 2019-01-14 18:49:14 -07:00
safesetid LSM: SafeSetID: add selftest 2019-02-12 10:58:51 -08:00
seccomp selftests/seccomp: Actually sleep for 1/10th second 2019-02-13 08:52:42 -07:00
sigaltstack
size
sparc64 selftests: sparc64: Add missing SPDX License Identifiers 2018-06-18 09:29:20 -06:00
splice
static_keys selftests: static_keys: return Kselftest Skip code for skipped tests 2018-06-18 09:11:09 -06:00
sync selftests: sync: add config fragment for testing sync framework 2018-06-18 09:11:10 -06:00
sysctl tools/testing/selftests/sysctl/sysctl.sh: add tests for >32-bit values written to 32-bit integers 2019-03-12 10:04:00 -07:00
tc-testing net/sched: act_tunnel_key: validate the control action inside init() 2019-03-21 13:26:42 -07:00
timers selftests: timers: use LDLIBS instead of LDFLAGS 2019-01-28 08:02:12 -07:00
tmpfs tmpfs: test link accounting with O_TMPFILE 2019-03-05 21:07:20 -08:00
tpm2 selftests: add TPM 2.0 tests 2019-02-08 23:13:02 +02:00
uevent selftests: uevent filtering 2018-05-23 15:24:22 -04:00
user selftests: user: return Kselftest Skip code for skipped tests 2018-06-18 09:11:09 -06:00
vDSO selftests: vDSO - fix to return KSFT_SKIP when test couldn't be run 2018-07-11 10:14:26 -06:00
vm tools: mark 'test_vmalloc.sh' executable 2019-03-11 10:10:29 -07:00
watchdog selftests: watchdog: fix spelling mistake "experies" -> "expires" 2018-12-13 13:03:19 -07:00
x86 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-01-27 12:02:00 -08:00
zram selftests: zram: return Kselftest Skip code for skipped tests 2018-06-18 09:11:09 -06:00
.gitignore
gen_kselftest_tar.sh
kselftest_harness.h selftests/harness: Update named initializer syntax 2019-02-13 08:52:35 -07:00
kselftest_install.sh
kselftest.h selftest: include stdio.h in kselftest.h 2019-02-13 08:34:47 -07:00
lib.mk selftests: Fix test errors related to lib.mk khdr target 2018-12-17 09:17:55 -07:00
Makefile Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-03-10 17:37:29 -07:00